The critical point of NH3 is 132°C and 111 atm and the critical point of N2 is -147°C and 34 atm. Which of these substances cannot be liquefied at room temperature no matter how much pressure is applied...

Dry nitrogen is bubbled through liquid benzene at 20.0°C. From 100.0L of the gaseous mixture of nitrogen and benzene, 24.7 g is condensed by passing the mixture through a trap at a temperature nitrogen...